J. P. Tewari and P. Bains, Fungi associated with the roots of clover in Alberta. I. Olpidium brassicae and Ligniera sp.
Canadian Plant Disease Survey 63:2, 1983 35, found at CPS-SCP of Canada website[permanent dead link]. Accessed January 11, 2010.
Martin, Isobel (1977). Forests to Grainfields. Berrymoor, Alberta: Berrymoor/Carnwood Historical Society. p. 17. ISBN0-919213-36-7. Archived from the original on September 24, 2015. Retrieved August 12, 2013.
web.archive.org
Martin, Isobel (1977). Forests to Grainfields. Berrymoor, Alberta: Berrymoor/Carnwood Historical Society. p. 17. ISBN0-919213-36-7. Archived from the original on September 24, 2015. Retrieved August 12, 2013.
Richard A. Roepell and John R. J. French, Ambrosia Fungi of the Western United States and Canada - Beetle Associations (Coleoptera Scolytidae) Tree Hosts, and Distributions, found at Vet Med websiteArchived 2011-06-10 at the Wayback Machine. Accessed January 11, 2010.
wsu.edu
vetmed.wsu.edu
Richard A. Roepell and John R. J. French, Ambrosia Fungi of the Western United States and Canada - Beetle Associations (Coleoptera Scolytidae) Tree Hosts, and Distributions, found at Vet Med websiteArchived 2011-06-10 at the Wayback Machine. Accessed January 11, 2010.